CN111785864A - Square aluminum shell lithium battery and battery cover plate thereof - Google Patents
Square aluminum shell lithium battery and battery cover plate thereof Download PDFInfo
- Publication number
- CN111785864A CN111785864A CN202010508515.8A CN202010508515A CN111785864A CN 111785864 A CN111785864 A CN 111785864A CN 202010508515 A CN202010508515 A CN 202010508515A CN 111785864 A CN111785864 A CN 111785864A
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- plate
- cathode
- explosion
- anode
- battery cover
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/20—Pressure-sensitive devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The invention discloses a battery cover plate, wherein an anode rivet sequentially penetrates through a sealing ring, a supporting frame, a base plate, a rotation stopping sheet and an anode pressing plate to be riveted, a cathode rivet sequentially penetrates through the sealing ring, the supporting frame, the base plate, a cathode insulating plate and a cathode pressing plate to be riveted, the anode switching sheet is welded below the anode rivet, the cathode switching sheet is welded below the cathode rivet, an explosion-proof hole is formed in the center of the base plate, an explosion-proof sheet is installed in the explosion-proof hole, an explosion-proof film is installed at the top of the explosion-proof hole, a liquid injection hole is formed in the base plate, a sealing nail and a sealing sheet are installed in the liquid injection hole in a sealing mode, cylindrical positioning columns are further arranged at two ends of the base plate, positioning holes are formed in the rotation stopping sheet and the cathode. The invention also discloses a square aluminum shell lithium battery comprising the battery cover plate.
Description
Technical Field
The invention relates to the technical field of new energy battery manufacturing, in particular to a battery cover plate. The invention also relates to a square aluminum shell lithium battery comprising the battery cover plate.
Background
With the guidance and promotion of new energy field policies at home and abroad, the technical innovation of lithium batteries in the directions of energy storage, communication, power and the like is rapidly developed, the related technical research of square aluminum shell lithium batteries which are one of mainstream application product types is gradually deepened, the industrialization of lithium batteries is rapidly promoted, the requirements of lithium battery application clients are higher and higher, the technical research of battery cover plates as important components of the square aluminum shell lithium batteries is concerned more and more, and the technical requirements on the design of the battery cover plates are stricter. In order to improve the stability of the battery cover plate structure and the overall safety and stability of the square aluminum-shell lithium battery, the structure of the battery cover plate must be improved.
In conclusion, how to solve the problem of stability of the battery cover plate structure in the prior art and ensure the overall safety and stability of the square aluminum-shell lithium battery is a problem which needs to be solved urgently by technical personnel in the field at present.
Disclosure of Invention
In view of this, the present invention provides a battery cover plate, which solves the problem of stability of a battery cover plate structure in the prior art, and ensures the overall safety and stability of a square aluminum-shell lithium battery. Another object of the present invention is to provide a square aluminum-can lithium battery including the above battery cover plate.
In order to solve the technical problems, the invention provides a battery cover plate which comprises an anode rivet, a cathode rivet, an anode adapter sheet, a cathode adapter sheet, a sealing ring, a supporting frame, a base plate, a cathode insulating plate, a rotation stopping sheet, an anode pressing plate and a cathode pressing plate, and is characterized in that the anode rivet sequentially penetrates through the sealing ring, the supporting frame, the base plate, the rotation stopping sheet and the anode pressing plate to be riveted, the cathode rivet sequentially penetrates through the sealing ring, the supporting frame, the base plate, the cathode insulating plate and the cathode pressing plate to be riveted, the anode adapter sheet is welded below the anode rivet, the cathode adapter sheet is welded below the cathode rivet, an explosion-proof hole is formed in the center of the base plate, an explosion-proof sheet is arranged in the explosion-proof hole, an explosion-proof film is arranged at the top of the explosion-proof hole, a liquid injection hole is formed in the base plate, and a sealing nail and a sealing sheet are, the two ends of the base plate are also provided with cylindrical positioning columns, and the rotation stopping sheet and the negative electrode insulating plate are provided with positioning holes which are connected with the positioning columns in an embedded mode.
Preferably, the substrate is further provided with a drain valve, and the cathode insulating plate is provided with a through hole communicated with the drain valve.
Preferably, the explosion-proof membrane is provided with regular hollow scratches.
Preferably, an insulating film is attached to the upper surface of the substrate.
The invention also provides a square aluminum shell lithium battery which comprises a battery shell, a battery cover plate and a battery core, wherein the battery cover plate is the battery cover plate as described in any one of the above.
Preferably, the structure of the battery cell is a laminated structure and/or a wound structure.
The battery cover plate provided by the invention adopts a laser welding mode when being connected with a battery shell, so that the possibility of the internal resistance change of the battery cover plate can be effectively reduced, and the overall performance of a lithium battery can be effectively improved. The both ends of base plate still are provided with cylindrical reference column, and it is connected with reference column nested to be provided with the locating hole on the commentaries on classics piece, the negative pole insulation board, and it is more firm to guarantee to end the commentaries on classics piece, the more firm of negative pole insulation board, and cooperation anodal rivet and negative pole rivet correspond with sealing washer, support frame, base plate, end the commentaries on classics piece, anodal clamp plate and sealing washer, support frame, base plate, negative pole insulation board, the riveted structure of negative pole clamp plate from bottom to top, can ensure the structural stability. In the process of carrying out charge-discharge reaction on the lithium battery, when the inside of the battery reaches a certain air pressure, the explosion-proof piece arranged in the explosion-proof hole can be opened, the explosion-proof membrane with regular hollow scratches arranged at the top of the explosion-proof hole can effectively control the limit value of the battery exhaust pressure, and meanwhile, the relief valve can be opened, so that the overall safety and stability of the lithium battery are guaranteed.
The invention also provides a square aluminum shell lithium battery comprising the battery cover plate, and the battery cover plate has the technical effects, so that the square aluminum shell lithium battery also has the same technical effects, and the detailed description is omitted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only a part of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a battery cover plate structure disclosed in the embodiment of the present application.
In the figure, 1, a base plate, 2, a relief valve, 3, an explosion-proof sheet, 4, a rotation-stopping sheet, 5, a positive pressure plate, 6, a positioning hole, 7, an explosion-proof membrane, 8, a negative adapter sheet, 9, a positive adapter sheet, 10, scratches, 11, a positioning column, 12, a negative rivet, 13, a positive rivet, 14, a negative insulation plate, 15, a negative pressure plate, 16, a support frame, 17, an explosion-proof hole, 18, a sealing nail, 19, a sealing sheet, 20, a sealing ring and 21, a liquid injection hole are arranged.
Detailed Description
In order to further understand the technical content, features and effects of the present invention, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present disclosure.
Referring to fig. 1, fig. 1 is a schematic diagram of a battery cover plate structure disclosed in the embodiment of the present application.
As shown in figure 1, the battery cover plate comprises an anode rivet (13), a cathode rivet (12), an anode adapter sheet (9), a cathode adapter sheet (8), a sealing ring (20), a support frame (16), a base plate (1), a cathode insulating plate (14), a rotation stopping sheet (4), an anode pressing plate (5) and a cathode pressing plate (15), wherein the anode rivet (13) sequentially penetrates through the sealing ring (20), the support frame (16), the base plate (1), the rotation stopping sheet (4) and the anode pressing plate (5) to be riveted, the cathode rivet (12) sequentially penetrates through the sealing ring (20), the support frame (16), the base plate (1), the cathode insulating plate (14) and the cathode pressing plate (15) to be riveted, the anode adapter sheet (9) is welded below the anode rivet (13), the cathode adapter sheet (8) is welded below the cathode rivet (12), open at the center of base plate (1) has explosion-proof hole (17), install explosion-proof piece (3) in explosion-proof hole (17), explosion-proof membrane (7) are installed at explosion-proof hole (17) top, it has notes liquid hole (21) to open on base plate (1) annotate the sealed nail (18) and gasket (19) of installing in liquid hole (21), the both ends of base plate (1) still are provided with cylindrical reference column (11), be provided with on only commentaries on classics piece (4), negative pole insulation board (14) locating hole (6) with reference column (11) nested connection.
The negative electrode insulating plate is characterized in that the substrate (1) is further provided with a drain valve (2), and the negative electrode insulating plate (14) is provided with a through hole communicated with the drain valve (2).
And the explosion-proof film (7) is provided with regular hollow scratches (10).
An insulating film is attached to the upper surface of the substrate (1).
The battery cover plate adopts a laser welding mode when being connected with the battery shell, so that the possibility of the internal resistance change of the battery cover plate can be effectively reduced, and the overall performance of the lithium battery can be effectively improved. The two ends of the base plate (1) are further provided with cylindrical positioning columns (11), the rotation stopping sheet (4) is arranged, the positioning holes (6) and the positioning columns (11) are arranged on the negative insulating plate (14) in an embedded mode, the rotation stopping sheet (4) is guaranteed, the negative insulating plate (14) is more stable and firm, the positive rivet (13) and the negative rivet (12) are matched to correspond to the sealing ring (20), the support frame (16), the base plate (1), the rotation stopping sheet (4), the positive pressing plate (5) and the sealing ring (20), the support frame (16), the base plate (1), the negative insulating plate (14), and the riveting structure of the negative pressing plate (15) from bottom to top can be guaranteed, and the structural stability of the battery cover. In the process of charge and discharge reaction of the lithium battery, when the inside of the battery is critical to a certain air pressure, the explosion-proof sheet (3) arranged in the explosion-proof hole (17) can be opened, the explosion-proof membrane (7) with the regular hollow scratches (10) is arranged at the top of the explosion-proof hole (17), so that the limit value of the battery exhaust pressure can be effectively controlled, and meanwhile, the relief valve (2) can be opened, so that the overall safety and stability of the lithium battery are guaranteed.
For the introduction of the square aluminum-shell lithium battery provided by the invention, reference is made to the above-mentioned embodiment of the battery cover plate, and the description of the invention is omitted here.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A battery cover plate comprises an anode rivet, a cathode rivet, an anode adapter plate, a cathode adapter plate, a sealing ring, a supporting frame, a substrate, a cathode insulating plate, a rotation stopping plate, an anode pressing plate and a cathode pressing plate, and is characterized in that the anode rivet sequentially penetrates the sealing ring, the supporting frame, the substrate, the rotation stopping plate and the anode pressing plate for riveting, the cathode rivet sequentially penetrates the sealing ring, the supporting frame, the substrate, the cathode insulating plate and the cathode pressing plate for riveting, the anode adapter plate is welded below the anode rivet, the cathode adapter plate is welded below the cathode rivet, an explosion-proof hole is formed in the center of the substrate, an explosion-proof plate is installed in the explosion-proof hole, an explosion-proof membrane is installed at the top of the explosion-proof hole, a liquid injection hole is formed in the substrate, a sealing nail and a sealing plate are installed in the liquid injection hole in a sealing manner, cylindrical positioning columns are further arranged at two ends of the, the rotation stopping sheet and the negative electrode insulating plate are provided with positioning holes which are connected with the positioning columns in a nested manner.
2. The battery cover plate according to claim 1, wherein a drain valve is further mounted on the base plate, and a through hole is provided in the negative insulating plate to communicate with the drain valve.
3. The battery cover plate according to claim 1, wherein the rupture disk has regular hollow scratches.
4. The battery cover plate according to claim 1, wherein an insulating film is attached to the upper surface of the base plate.
5. A square aluminum shell lithium battery, which comprises a battery shell, a battery cover plate and a battery core, wherein the battery cover plate is the battery cover plate as claimed in any one of claims 1 to 4.
6. A square aluminium-clad lithium battery as claimed in claim 5, wherein the cell structure is a laminated and/or wound structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010508515.8A CN111785864A (en) | 2020-06-06 | 2020-06-06 | Square aluminum shell lithium battery and battery cover plate thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010508515.8A CN111785864A (en) | 2020-06-06 | 2020-06-06 | Square aluminum shell lithium battery and battery cover plate thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111785864A true CN111785864A (en) | 2020-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010508515.8A Pending CN111785864A (en) | 2020-06-06 | 2020-06-06 | Square aluminum shell lithium battery and battery cover plate thereof |
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| Country | Link |
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| CN (1) | CN111785864A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113285150A (en) * | 2021-05-19 | 2021-08-20 | 浙江中泽精密科技有限公司 | Cover plate structure of power battery |
| CN113714696A (en) * | 2021-09-09 | 2021-11-30 | 上海金东唐科技有限公司 | Explosion-proof sheet welding system and explosion-proof sheet welding method |
| CN114284608A (en) * | 2021-12-28 | 2022-04-05 | 苏州时运佳塑胶制品有限公司 | New energy automobile lithium cell apron |
| CN115377619A (en) * | 2022-08-09 | 2022-11-22 | 合肥国轩高科动力能源有限公司 | Battery cell with lugs at two sides, battery and assembling method |
| CN116014317A (en) * | 2023-02-09 | 2023-04-25 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage device and electric equipment |
-
2020
- 2020-06-06 CN CN202010508515.8A patent/CN111785864A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113285150A (en) * | 2021-05-19 | 2021-08-20 | 浙江中泽精密科技有限公司 | Cover plate structure of power battery |
| CN113714696A (en) * | 2021-09-09 | 2021-11-30 | 上海金东唐科技有限公司 | Explosion-proof sheet welding system and explosion-proof sheet welding method |
| CN114284608A (en) * | 2021-12-28 | 2022-04-05 | 苏州时运佳塑胶制品有限公司 | New energy automobile lithium cell apron |
| CN115377619A (en) * | 2022-08-09 | 2022-11-22 | 合肥国轩高科动力能源有限公司 | Battery cell with lugs at two sides, battery and assembling method |
| CN115377619B (en) * | 2022-08-09 | 2024-04-16 | 合肥国轩高科动力能源有限公司 | Battery with two side tabs and assembling method |
| CN116014317A (en) * | 2023-02-09 | 2023-04-25 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage device and electric equipment |
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